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Studies on Mg/Fe hydrotalcite-like-compound (HTlc) I. Removal of inorganic selenite (SeO3(2-)) from aqueous medium.
J Colloid Interface Sci. 2002 Jul 01; 251(1):26-32.JC

Abstract

A Mg/Fe hydrotalcite-like-compound (HTlc) was prepared and its affinity toward the removal of SeO(3)(2-) from an aqueous medium was studied as a function of pH, time, temperature, particle dose, and SeO(3)(2-) concentration. The fraction of SeO(3)(2-) removal increases with decrease in both pH and temperature. The adsorption data are fitted to the Langmuir adsorption isotherm in the temperature range 303-333 K, and the thermodynamic parameters viz. standard Gibbs' free energy change (DeltaG degrees), enthalpy change (DeltaH degrees), and entropy change (DeltaS degrees) are calculated. The negative value of DeltaH degrees indicates that the adsorption process is exothermic. The apparent equilibrium constants (K(a)) are also calculated and found to decrease with increase in temperature.

Authors+Show Affiliations

Das J
Regional Research Laboratory (CSIR), Bhubaneswar, 751 013, India.
Das D
No affiliation info available
Dash GP
No affiliation info available
Parida KM
No affiliation info available

MeSH

AdsorptionAluminum HydroxideEntropyHydrogen-Ion ConcentrationIronMagnesiumMagnesium HydroxideSodium SeleniteWater Pollutants, ChemicalWater Purification

Pub Type(s)

Journal Article

Language

eng

PubMed ID

16290698

Citation

Das, J, et al. "Studies On Mg/Fe Hydrotalcite-like-compound (HTlc) I. Removal of Inorganic Selenite (SeO3(2-)) From Aqueous Medium." Journal of Colloid and Interface Science, vol. 251, no. 1, 2002, pp. 26-32.
Das J, Das D, Dash GP, et al. Studies on Mg/Fe hydrotalcite-like-compound (HTlc) I. Removal of inorganic selenite (SeO3(2-)) from aqueous medium. J Colloid Interface Sci. 2002;251(1):26-32.
Das, J., Das, D., Dash, G. P., & Parida, K. M. (2002). Studies on Mg/Fe hydrotalcite-like-compound (HTlc) I. Removal of inorganic selenite (SeO3(2-)) from aqueous medium. Journal of Colloid and Interface Science, 251(1), 26-32.
Das J, et al. Studies On Mg/Fe Hydrotalcite-like-compound (HTlc) I. Removal of Inorganic Selenite (SeO3(2-)) From Aqueous Medium. J Colloid Interface Sci. 2002 Jul 1;251(1):26-32. PubMed PMID: 16290698.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Studies on Mg/Fe hydrotalcite-like-compound (HTlc) I. Removal of inorganic selenite (SeO3(2-)) from aqueous medium. AU - Das,J, AU - Das,D, AU - Dash,G P, AU - Parida,K M, PY - 2000/12/21/received PY - 2002/02/21/accepted PY - 2000/12/21/received PY - 2002/02/21/accepted PY - 2005/11/18/pubmed PY - 2007/5/16/medline PY - 2005/11/18/entrez SP - 26 EP - 32 JF - Journal of colloid and interface science JO - J Colloid Interface Sci VL - 251 IS - 1 N2 - A Mg/Fe hydrotalcite-like-compound (HTlc) was prepared and its affinity toward the removal of SeO(3)(2-) from an aqueous medium was studied as a function of pH, time, temperature, particle dose, and SeO(3)(2-) concentration. The fraction of SeO(3)(2-) removal increases with decrease in both pH and temperature. The adsorption data are fitted to the Langmuir adsorption isotherm in the temperature range 303-333 K, and the thermodynamic parameters viz. standard Gibbs' free energy change (DeltaG degrees), enthalpy change (DeltaH degrees), and entropy change (DeltaS degrees) are calculated. The negative value of DeltaH degrees indicates that the adsorption process is exothermic. The apparent equilibrium constants (K(a)) are also calculated and found to decrease with increase in temperature. SN - 0021-9797 UR - https://www.unboundmedicine.com/medline/citation/16290698/Studies_on_Mg/Fe_hydrotalcite_like_compound__HTlc__I__Removal_of_inorganic_selenite__SeO3_2____from_aqueous_medium_ DB - PRIME DP - Unbound Medicine ER -